Much of it was freeway time and the vast majority of it he was in the far left non-HOV lane driving right at the speed limit with a huge gap between him and the car in front of him. Cars would go around him and right in front of him after annoyed.

The question is:

Do I do a public service during this drive to educate him on the passing lane? Or stay silent?

He was probably 50ish and not very chatty for sure